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I am curious if anyone knows what the expected gas mileage will be for the new 2011 X5 35i. I realize the engine will be an 8-speed, 300hp, V6 turbo ... however, trying to understand what to expect on mpg. I am very close to ordering a 35d, mainly for the gas mileage and additional torque. However, if the new 35i's gas mileage is close enough to the 35d, I will most likely go with it to due to the availability of gas vs. diesel.

I am curious if anyone knows what the expected gas mileage will be for the new 2011 X5 35i. I realize the engine will be an 8-speed, 300hp, V6 turbo ... however, trying to understand what to expect on mpg. I am very close to ordering a 35d, mainly for the gas mileage and additional torque. However, if the new 35i's gas mileage is close enough to the 35d, I will most likely go with it to due to the availability of gas vs. diesel.

Thank you in advance for your help!

Its an inline 6 not V6, fyi. I gestimate the gasoline 35i at 17/24. There would be no diesel (in the USA) if the mileage was close enough...

I actually did this calculation to determine which was better for fuel economy. Here are the numbers that I could calculate. If anyone sees any discrepancies, please let me know.

2011 X5 35d (1)

2011 X5 35i (2)

L/100km

MPG (*)

L/100km

MPG (*)

City

10.7

22

13.2

17.8

Hwy

7.5

31.4

8.3

28.3

Combined

9.3

25.3

10.1

23.3

EPA Cost per year (3)

$1,741.11

$2,141.09

CDN Cost per year (4)

$2,119.30

$3,008.20

Distance per tank

568 miles / 914 km

523 miles / 842 km

Notes on numbers:(*) The MPG numbers are converted from European L/100km to US MPG. I couldn't get the 35d numbers to match the 19/26 that the EPA suggests for the 2010 35d and since I couldn't find EPA numbers for 2011, I converted from L/100kms that could be found.

(3) Based on EPA's Cost/Year formula of 45% Hwy/55% City for 15,000 miles per year where gas is $3.05 per gallon and diesel is $2.95 per gallon. DEF NOT included.

(4) For comparison, sort of based on EPA's Cost/Year formula of 45% Hwy/55% City for 15,000 miles per year where premium gas today is $1.132 per litre and diesel today is $0.949 per litre in Toronto, Ontario. DEF NOT included.

Last edited by santo; 03-25-2010 at 11:53 AM.
Reason: Added distance per tank

You think that the 2011 35i numbers are going to be that markedly different from the 2010 30i numbers? The 2010 numbers are 15/21/18 not 17/28/23. I have a 2003 X5 which has the same EPA numbers, and I routinely get 14 in town and 20-23 on the highway, so those numbers are probably spot-on. I know you converted, but that's way off -- 5mpg is 27%. The 19/26/22 to 22/31/25 is still off, but only by 13%. The 2011 for the 35d should be exactly the same for the 2010 since the car is basically unchanged.

For gallons, I think you should just stick in the US numbers instead of converting.

Can you add a column for 'km/miles per tank'? For me, its not so much about saving money on the fuel ($400/yr? eh), but how much farther I can go on a tank of gas. Give me 585 miles baby!

You think that the 2011 35i numbers are going to be that markedly different from the 2010 30i numbers?

I didn't come up with numbers. They have been posted in the technical specifications document noted above in the notes. I would believe that with a new engine and transmission that you would get better fuel economy.

Quote:

Originally Posted by barbja

The 2011 for the 35d should be exactly the same for the 2010 since the car is basically unchanged.

They are the same. These 2010 numbers came from the Canadian BMW site. I don't have direct European numbers because the 30d and 40d engine output is different. The Canadian output is the same.

Quote:

Originally Posted by barbja

For gallons, I think you should just stick in the US numbers instead of converting.

I would be happy to stick to US numbers but as of this writing, I haven't found any that could be used in direct comparison for 2011. These do directly convert but I'm a little stunned as to why the EPA numbers and the converted numbers don't line up a little more closely. It must be the way the testing is done. These do look like optimistic numbers where the EPA are a little on the low side.

Quote:

Originally Posted by barbja

Can you add a column for 'km/miles per tank'? For me, its not so much about saving money on the fuel ($400/yr? eh), but how much farther I can go on a tank of gas. Give me 585 miles baby!

Notes on numbers:The 2011 X5 SAV Technical document where the EPA numbers are published is attached. Also included are X5 50i EPA numbers

(*) The L/100km numbers are converted from US EPA numbers.

(1) Based on EPA's Cost/Year formula of 45% Hwy/55% City for 15,000 miles per year where gas is $3.05 per gallon and diesel is $2.95 per gallon. DEF NOT included.

(2) For comparison, sort of based on EPA's Cost/Year formula of 45% Hwy/55% City for 15,000 miles per year where premium gas today is $1.132 per litre and diesel today is $0.949 per litre in Toronto, Ontario. DEF NOT included.

When did this data come out? Are these the 'real' EPA numbers? If these are the EPA numbers, does that mean that they are releasing the 2011 vehicles (or really really close to releasing)??!! (They weren't giving delivery dates, or releasing any already-built 2011 X5s because they didn't have EPA approval yet...)

Oh -- heh -- I can see 3-1-2010 at the top of the page (everything is so tiny!) So these were preliminary numbers since, as of at least last Friday, they still didn't have official numbers.

When did this data come out? Are these the 'real' EPA numbers? If these are the EPA numbers, does that mean that they are releasing the 2011 vehicles (or really really close to releasing)??!! (They weren't giving delivery dates, or releasing any already-built 2011 X5s because they didn't have EPA approval yet...)

Those numbers came out today (or maybe yesterday). I can't certify the validity of these numbers. I went to the BMW site, looked at the doc this morning and said, "Hey, EPA estimated numbers" so I corrected my table. Are they EPA certified numbers? I have no idea but if BMW posted them, I would tend to give them the benefit of the doubt.

You think you're impatient... in Canada, we don't even have retail numbers released to order properly.

In Canada, we don't even have retail numbers released to order properly.

Now that's just not so nice.

I wouldn't be so impatient if I weren't waiting for a PCD date. For all I know they'll tell me to show up next week! That's just what I need -- two $800 plane tickets after spending a bazillion dollars on a car. However, most likely these 'late comers' (or early comers I guess) will get tacked onto the end and, although the car is ready now, we'll pick up in late May; which I'm more than ok with.

Did you also notice that the 0-60 time for the 35i is better than the 35d? 6.4 vs 6.9. The 30i was 7.8. The torque difference is still astronomical, but the 35i is by no means punky. And then there's the 8-speed vs the 6-speed transmission. Boy I wish they had updated the D at the same time as the other two.

What is this, an April fool's joke? I seriously doubt that the 35i gets 25 mpg highway.

I did occur to me that someone would think this was a prank but that just goes to show how impressive these numbers are. These are REAL. You can access them from BMWUSANews.com in the Press Kit that was probably for the New York International Auto Show at this link. It's on the colored bar on the right under "Press Kit Contents".

Quote:

Originally Posted by XXX555

If there is only a 2mpg penality average for getting the X35i with a half second better performance improvement over the X35d, then I'd be buying the X35i.

This is exactly what I'm seriously considering since the trade-offs in going diesel (filling issues, froze DEF, etc) could be outweighed by only a slightly higher operating cost. In Toronto, it's a little more difficult to justify since diesel is cheaper that premium gas by $0.15 to $0.25 per *litre*. What makes me wonder is why the USA EPA numbers are so far off of the Canadian/EU numbers. Is the EPA testing procedures biased towards gas?

These are REAL. You can access them from BMWUSANews.com in the Press Kit that was probably for the New York International Auto Show at this link. It's on the colored bar on the right under "Press Kit Contents".

Well, they are real in the sense that they are the results of the EPA testing. What the comparison will be in real life remains to be seen, e.g., the benefits of that extra speed in the transmission might account for some of the increase and might also be tailored to get maximum results on the EPA test cycle...